I have exactly the same problem. Works well on Android devices. Works well on iOS 10.2.1 but not on iOS 9.3.5. I have tried the wkwebview plugin but nothing changed.
ionic plugin install https://github.com/driftyco/cordova-plugin-wkwebview-engine --save
In detail my ion-list with virtualScroll and *ngIf dont work. And the navigation is wierd.
I’m in production so I would be glad for any help

Just received (today about an hour ago) an iPhone capable of 10.x. I want to see if the same error are occurring in 10.2.

I thought you can is safari-inspector to inspect an IOS simulated phone, but haven’t been able to get that to work. Only tried for an hour or two. Do you know if this possible to do, use safari-inspector on IOS phone simulator?